This jersey has been signed with permanent paint pen and was obtained by myself to guarantee that it's 100% authentic. The jersey has been authenticated by BECKETT AUTHENTICATION SERVICES, the world's leading third party autograph authentication company. A tamper evident label is affixed on the item. The jersey will include a BECKETT Certificate of Authenticity with identical matching certificate number on both the item and the Certificate of Authenticity. If you have any questions feel free to ask.